Today, I went to the war history museum of Korea and learned about the history of Korean war.

The first war of Korea was in prehistoric age. The wapon fo the first war was made with stone, and gradually developed into the iron.

Ancient people didn't use bronze sword because it was too weak and expensive.

The wars are occured to take territory, foods, and slaves from other countries.

For instance, Goguryo's territory was almost consisted with mountains, so people couldn't farm.

Therefore, people in Goguryo invaded Bekjae and Shilla a lot to get some foods to survive.

 To survive, people made wars and many were died because of it.